ECON 11/5 - Comprehensive Study Notes on Adverse Selection and Moral Hazard

Introduction

  • Solutions to address adverse selection and information asymmetry in markets.

First Solution: Acquiring Information

  • Buyers can either learn the necessary information themselves or be compelled to provide it.

Second Solution: Mechanism Design

  • Case Specific Solutions: Tailored solutions for specific scenarios to address adverse selection.

Adverse Selection in Buyer Contracts

  • Contract Differentiation: Sellers create various contracts to enable buyers to self-sort based on their characteristics or risk preferences.

  • Example of Health Insurance Plans:

    • Different plans are available such as:

    • High Deductible Plans:

      • Requires a high initial payment by the buyer before insurance begins to cover costs.

      • Generally attracts healthy individuals who prefer lower monthly premiums and are willing to bear the risk.

      • Result: Healthier students opt for this due to low premiums.

    • Low Deductible Plans:

      • Requires a small out-of-pocket cost per claim but has high monthly premiums.

      • Typically appeals to those with more health issues, as it minimizes upfront expenses.

  • Buyers reveal information about their risk profiles through their choice of plan.

  • Auction Mechanism:

    • An auction can incentivize buyers to disclose their valuation or willingness to pay, revealing private information through competition.

    • Relevant in game theory as a mechanism design feature that encourages information transparency.

Third Solution: Government Intervention

  • Government Role:

    • Enhance information flow or directly mitigate adverse selection.

    • Incentive Programs:

    • Governments can incentivize buyers to disclose private information.

    • Possible penalties for non-disclosure.

    • Subsidized Insurance:

    • To cover part of the costs, addressing the end of production problems in insurance.

    • Mandates for Insurance:

    • Requiring everyone to obtain insurance to eliminate selection problems (e.g., Medicaid).

  • Connections to Previous Concepts:

    • Addresses both adverse selection and externalities within the insurance domain.

    • Relationships between public health, adverse selection, and production concerns.

Summary of Adverse Selection

  • Adverse selection occurs when buyers possess more information than sellers, leading to inefficiency in transactions.

  • Asymmetric Information:

    • If both parties have symmetric information (equal knowledge), market inefficiencies are reduced.

  • Real-Life Instances:

    • Adverse selection is prevalent in many areas such as healthcare and employment markets.

  • Potential solutions to adverse selection can be leveraged for personal efficiency and as business opportunities.

Moral Hazard

Definition and Distinction from Adverse Selection

  • Moral hazard occurs when a party alters their behavior after securing an agreement, due to insurance coverage or reduced risk exposure.

  • Adverse selection is based on preexisting characteristics leading to type selection, such as high-cost customers or low-quality goods.

Key Characteristics of Moral Hazard

  • Behavioral Change Post-Contract:

    • Examples include:

    • Individuals driving more recklessly once insured.

    • Increased healthcare usage due to insurance coverage.

  • Formal Definition:

    • Resulting actions are not fully observable leading to inefficiencies or adverse outcomes.

  • Market Failures:

    • Moral hazard can create inefficiencies as individuals may take riskier actions when insulated from consequences.

Examples of Moral Hazard

  • Insurance Cases:

    • Car insurance impacts driving behavior.

    • Health insurance influences healthcare consumption patterns.

  • Principal-Agent Problem:

    • Examples include mechanics, CEOs, restaurant staff, real estate agents, and team dynamics where principals cannot observe agents directly leading to misaligned interests.

Solutions to Moral Hazard

Broad Strategies to Mitigate Moral Hazard

  • Monitoring Action:

    • Using technology like beacons in cars or surveillance in workplaces to ensure compliance and accountability.

  • Alignment of Interests:

    • Providing stock options to employees so that their interests are aligned with the company’s performance.

    • Incentivizing behaviors that align with desired outcomes (e.g., bonus systems tied to performance).

  • Security Deposits in Rentals:

    • Shifts risk on tenants to care for properties to recover deposits.

  • Co-Payments in Healthcare:

    • Encourages patients to take responsibility for necessary medical care by sharing costs.

Actuarial Fairness and Risk Aversion

  • Actuarially Fair Insurance:

    • Premiums reflecting the true risk of a particular event occurring.

    • Example of calculating expected costs based on disease likelihood.

  • Risk Preference:

    • Risk-averse individuals prefer certainty and will pay a premium.

    • Risk lovers may accept higher costs for the potential of greater rewards. (e.g., gambling).

Conclusion and Future Directions

  • A reminder of the three information problems discussed: adverse selection among buyers and sellers, as well as moral hazard.

  • Overview of solutions provided including information review, case-specific adjustments, and government regulations.

  • Preview of next chapter on the rational rule-making process and learning curves in economic modeling.